Revert "cmd/{k8s-nameserver,k8s-operator},k8s-operator: add a kube nameserver, make operator deploy it (#11017)" (#11669)

Temporarily reverting this PR to avoid releasing
half finished featue.

This reverts commit 9e2f58f846.

Signed-off-by: Irbe Krumina <irbe@tailscale.com>

cmd/k8s-operator/deploy/manifests/nameserver/cm.yaml

@@ -1,4 +0,0 @@
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: dnsconfig

cmd/k8s-operator/deploy/manifests/nameserver/deploy.yaml

@@ -1,37 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: nameserver 
-spec:
-  replicas: 1
-  revisionHistoryLimit: 5
-  selector:
-    matchLabels:
-      app: nameserver
-  strategy:
-    type: Recreate
-  template:
-    metadata:
-      labels:
-        app: nameserver
-    spec:
-      containers:
-      - imagePullPolicy: IfNotPresent
-        name: nameserver
-        ports:
-        - name: tcp
-          protocol: TCP
-          containerPort: 1053
-        - name: udp
-          protocol: UDP
-          containerPort: 1053
-        volumeMounts:
-        - name: dnsconfig
-          mountPath: /config
-      restartPolicy: Always
-      serviceAccount: nameserver
-      serviceAccountName: nameserver
-      volumes:
-      - name: dnsconfig
-        configMap:
-          name: dnsconfig

cmd/k8s-operator/deploy/manifests/nameserver/sa.yaml

@@ -1,6 +0,0 @@
-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: nameserver
-imagePullSecrets:
-- name: foo

cmd/k8s-operator/deploy/manifests/nameserver/svc.yaml

@@ -1,16 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: nameserver
-spec:
-  selector:
-    app: nameserver
-  ports:
-  - name: udp
-    targetPort: 1053
-    port: 53
-    protocol: UDP
-  - name: tcp
-    targetPort: 1053
-    port: 53
-    protocol: TCP